Well, I wanted to say Geena Davis as Thelma for the worst (since that has to be the worst roadtrip ever), and then I realized I couldn't think of any character she'd ever played with whom I'd actually WANT to roadtrip. Ditto Louise since between that one and Rocky Horror, Susan Sarandon seems to jinx anyone with whom she rides shotgun.

I briefly flirted with Dennis Weaver as David in Duel but then finally settled on the worst roadtrip partner ever: Rutger Hauer as John Ryder.

Best: Rutger Hauer as Navarre because what woman can resist a man who will risk all for love.

Jeannie